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https://issues.apache.org/jira/browse/HADOOP-13309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15348081#comment-15348081
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Steve Loughran commented on HADOOP-13309:
-----------------------------------------

+1 for a documented convention. UGI shortname for user & group in the absence 
of anything else.

For blobstores, maybe one feature that could be queried is something about what 
permissions models are available, Unix-y user+group+other

> Document S3A known limitations in file ownership and permission model.
> ----------------------------------------------------------------------
>
>                 Key: HADOOP-13309
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13309
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>            Reporter: Chris Nauroth
>            Priority: Minor
>
> S3A does not match the implementation of HDFS in its handling of file 
> ownership and permissions.  Fundamental S3 limitations prevent it.  This is a 
> frequent source of confusion for end users.  This issue proposes to document 
> these known limitations.



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